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Lintel Dec 16 - 22 25 questions
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Monday 16 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 8,100,000 in standard form

    Answer: 8.1 × 106
  2. 2. Algebra

    Factorise: x² - 6x - 40

    Answer: (x + 4)(x - 10)
  3. 3. Geometry

    Hypotenuse = 20cm, angle = 41°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 15.09cm
  4. 4. Ratio

    Red and blue counters are in the ratio 11:3. What fraction of the counters are red?

    Answer: 11⁄14
  5. 5. Statistics

    Calculate the mean of: 34, 44, 46, 11, 19, 34. Give your answer to 2 decimal places

    Answer: 31.33

Tuesday 17 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000036 in standard form

    Answer: 3.6 × 10-5
  2. 2. Algebra

    Factorise: x² + 13x + 12

    Answer: (x + 12)(x + 1)
  3. 3. Geometry

    Adjacent = 28cm, angle = 36°. Find opposite. Give your answer to 2 decimal places

    Answer: 20.34cm
  4. 4. Ratio

    Simplify: 20:16:8

    Answer: 5:4:2
  5. 5. Statistics

    The mean of 6 numbers is 32. If 5 of them are 38, 44, 17, 18, 27, what is the missing number?

    Answer: 48

Wednesday 18 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00064 in standard form

    Answer: 6.4 × 10-4
  2. 2. Algebra

    Factorise: x² - x - 2

    Answer: (x + 1)(x - 2)
  3. 3. Geometry

    Adjacent = 12cm, angle = 48°. Find opposite. Give your answer to 2 decimal places

    Answer: 13.33cm
  4. 4. Ratio

    Simplify: 15:15:6

    Answer: 5:5:2
  5. 5. Statistics

    The mean of 5 numbers is 34. If 4 of them are 24, 34, 43, 38, what is the missing number?

    Answer: 31

Thursday 19 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 41,000,000 in standard form

    Answer: 4.1 × 107
  2. 2. Algebra

    Factorise: x² + 3x - 40

    Answer: (x + 8)(x - 5)
  3. 3. Geometry

    Hypotenuse = 20cm, angle = 40°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 15.32cm
  4. 4. Ratio

    Red and blue marbles are in the ratio 14:7. What fraction of the marbles are blue?

    Answer: 1⁄3
  5. 5. Statistics

    Calculate the mean of: 35, 47, 29, 34, 38, 12, 9. Give your answer to 2 decimal places

    Answer: 29.14

Friday 20 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0082 in standard form

    Answer: 8.2 × 10-3
  2. 2. Algebra

    Factorise: x² - 4x - 21

    Answer: (x + 3)(x - 7)
  3. 3. Geometry

    Adjacent = 22cm, angle = 36°. Find opposite. Give your answer to 2 decimal places

    Answer: 15.98cm
  4. 4. Ratio

    Divide 192 in the ratio 3:3:2

    Answer: 72, 72 and 48
  5. 5. Statistics

    The mean of 6 numbers is 30. If 5 of them are 34, 26, 18, 20, 37, what is the missing number?

    Answer: 45